package com.itheima.api;

public class IzhuanS {
    public static void main(String[] args) {
        String s1="100";
        int i1=200;
        System.out.println(s1+i1);
        int i2 = Integer.parseInt(s1);
        System.out.println(i2+i1);
        String s2=300+"";
        int i3=300;
        System.out.println(s2+i3);
        String s3 = String.valueOf(i3);
        System.out.println(Integer.parseInt(s3+100));
    }
}
